Exhaust temperature increases in all cylinders, the possible cause may be_____(1) increased scavenging air temperature, (2) air in fuel pumps and fuel valves, (3) fouling of air and gas passages.
【单选题】听力原文:W: If you can help me paint the bookshelf and the table this morning, we can go to the beach this afternoon. M: I'm not very good at painting, but if you like I'll wash the ear instead. What is t...